What is the role of reputation-based filtering in an SEG?

Reputation-based filtering in a Secure Email Gateway is primarily designed to assess the credibility of incoming email sources. This process involves analyzing various factors related to the sender's reputation, such as their historical sending behavior, the volume of emails they typically send, and whether their previous emails have been flagged as spam or malicious. By leveraging such information, the SEG can effectively determine whether to allow, block, or flag messages for further review.

This approach helps to enhance security by minimizing the risk of phishing attacks, spam, and malware that could come from untrustworthy senders. By evaluating the sender's reputation, organizations can focus on maintaining a higher level of email security while ensuring legitimate communications are not disrupted.